Filling-replenishing loom.



No. 729,006. PATENTED MAY 26, 1903.

E. s. s'rmrson. .PILLING RBPLENISHING LOOM.

LPI'LIOATION IILBD JULY 25. 1902 10 MODEL. 2 SHEETS-SHEET 1.

PATENTED MAY 26, 1903.

E. S. STIMPSON'.

FILLING REPLENISHING LOOM.

APPLICATION FILED JULY 25,1902.

2 SHEETS-SHEET 2.

10 MODEL.

UNITED STATES Patented May 26, 1903.

PATENT OFFICE.

EDWYARD S. STIMPSON, CF HOPEDALE, MASSACHUSETTS, ASSIGNOR TO DRAPER COMPANY, OF HOPEDALE, MASSACHUSETTS, A CORPORA- TICN OF MAINE.

FlLLlNG-REPLENISHING LOOM.

SPECIFICATION forming part of Letters Yatent No. 729,006, dated May 26, 1903.

Application filed July 25,1902 j To all whom, it may concern:

Be it known that I, EDWARD S. STIMPSON, a citizen of the United States, residing at Hopedale, in the county of Worcester and State of Massachusetts, have invented an Improvement in Automatic Filling Replenishing Looms, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention has for its object the production of means for improving the operation of looms for weaving whereby by subjecting the operation of the let-off and take-up mechanisms to a closer and more exact control than is now common when the normal operation of the loom is temporarily interrupted the cloth produced willbe of a highly-uniform character and practically free from thick or thin places.

My invention is especially adapted for use on looms provided with automatic filling-replenishing mechanism, and I have herein shown my invention as embodied in a loom of such character and provided with two weft or filling forks, one at each side of the loom. The presence or absence of the filling across the lay is thus detected by one or the other of, the filling-forks, and I have so arranged the mechanism that if the filling is absent on either pick the detection thereof will arrest the operation of the take-up and let-0E mechanisms for one pick. Furthermore, should the loom continue to run for one or more picks thereafter-as, for instance, is usual in automatic filling-replenishing loo1nsthe said mechanisms will be maintained inoperative during such picks. Thus the let-off of the yarn and take-up of the cloth are only effected under proper running condition of the loom and contemporaneously therewith and arrested when the condition changes and during the continuation of such change.

Various devices have been employed for arresting the take-up for a predetermined number of picks upon occurrence of an abnormal condition in the running of the loom and also to arrest the let-01f when the takeup is arrested, so as to prevent the formation of thick places in the cloth. So far as I am Serial No. 116,896. (No model-J aware, however, it is broadly new to govern the take-up and let-off mechanisms in such manner that the arrest thereof instead of being for a predetermined interval is for such an interval aswill be coterminous with the abnormal operation of the loom-one, two, three, or more picks, as the case may be.

The various novel features of myinvention will be hereinafter fully described in the subjoined specification and particularly pointed out in the claims appended thereto. 1

Figure 1 is a right-hand side elevation of a portion of an automatic filling-replenishing loom with one embodimentof my present invention applied thereto. Fig. 2 is a plan view, centrally broken out, of the breastbeam and the two filling-forks and adjacent devices, the replenishing mechanism and lay being omitted. Fig. 3 is an enlarged transverse section on the line 3 3, Fig. 2, 1o0king toward the left, showing certain means which insures the operation of the replenishing mechanism by detecting action of what may be termed the auxiliary filling detector or fork. Fig. 4is a top or plan view of the mechanism shown in Fig. 3; and Fig. 5 is a longitudinal section on the line 5 5, Fig. 4:. Fig. 6 is an enlarged detail, in front elevation, of the connection between the operating rockshaft and one of the filling-detecting devices.

Thefilling-replenishing mechanism is of the type shown in United States Patent No. 529,940, the shuttle used therewith having an automatically-self-threading device at the end adjacent the thread-eye, and such end is nearest the outer end of the feeder or hopper of the replenishing mechanism, the latter being herein shown located at the right-hand side of the loom.

The use of two filling-detectors with means to insure the operation of the replenishing mechanism upon filling failure, whether detected by either or both of the detecting del 1 The lay A breast-beam A having mount- I ed upon it at the right-hand end the fillingor hopper F to contain the filling-supplies b Fig. 1, to be transferred singly to the shuttle bythe transferrerf,and the controlling means including an operating rock-shaft (1' may be and are all substantially as in patent No.

529,940, referred to.

The whip-roll W is rotatably mounted in upturned arms m fast on a rock-shaft m, Fig. 1, a depending arm m thereon having attached to it one end of aspring S, the other endbeing fiXQd ILhG spring acting upon the whip-roll in opposition to the pull of the warps. The rock-shaft m has at its righthand end an arm m pivotally connected with a link a, which is hooked at a to embrace a headed stud a on the member of the pawl-carrier for the let-off mechanism and fulcrumed at c on the loom side. Herein the let-off mechanism comprises the warpbeam B, its attached gear B, ratchet-wheel B cooperating actuating-pawl 01", compound. pawl-carrier c d, link d connected with the lay-sword A and the arm E, having a roll to engage the periphery of the yarn mass on the beam, substantially as in United States Patent No. 647,815, dated April 17, 1900, though my invention is not restricted to use with such particular form of let-off mechanism. Variations in warp tension act through the link a in opposition to the spring S to move the pawl-carrier on its fulcrum, as in said patent.

A bent lever h h, fulcrumed on the 100m side at h constitutes a pawl-controller, the heavier arm h being extended forward above and in the path of movement of an inturned lug 80 on a depending rocker-arm d, fast on the rock-shaft d and normally occupying the position shown in Fig. 1. Thelever-arm h is provided with an elongated curved flange hfl'which projects laterally therefrom above a tall 01 on the pawl d so that when the rocker-arm d lifts the arm h of the controller the flange is depressed and engages the tail of the pawl, depressing the tail, and thereby disengaging the pawl from the ratchet B of the let-oif mechanism. When the rock-shaft d is turned in the direction of arrow 10, Fig. 1, as upon change of filling, the rocker-arm 01 will tilt thepawl-con troller h h'and the let-off will be arrested until the rock-shaft returns to normal position again-4L. a, for one pick. The take-up mechanism is also arrested simultaneouslyand for the same period, said mechanism, which may be of any usual construction, being only partly illustrated herein by the actuating-ratchet T, its cooperating pawl "l detent-pawl T and pawl'carrier 'l", operated in well-known manner for the actuating-pawl T The pawl-carrier is extended forward at i" above andin the path of movement of a lateral lug 82 on an arm d fast on and depending from the rock-shaft (1, so that when the latter is rocked as described'the take-up pawl T will be disengaged from the ratchet T and take-up will be arrested for one pick simultaneously with arrest of the let-01f. It is to be noted that such arrest of both mechanisms may be for more than one pick, for if the rock-shaft d is turned on several successive picks the takeup and let-off will be arrested upon those same picks. No let-back is necessary with the construction shown and described, and hence I find it necessary to employ only an ordinary detent-pawl, as T to prevent any retrograde movementof the take-upmechanism.

Referring now to Figs. 2 and 3, the rockshaft d has fast upon it an upturned arm d provided with a lateral head (1 adjacent the outer end of the slide f which is longitudinally movable in a guide f"; secured upon and transversely to the breast-beam. A filling fork or detectorf of usual construction is pivotally mounted on the inner end of the slide, the tail f being adapted to cooperate in usual manner with a notch 7 of the hook to on the weft-hammer W (see Fig. 5) upon failure of the filling to tilt the fork, the said hook having a second notch 8, Fig. 5, for a purpose to be described. If the filling is absent when the shuttle is in the shuttlebox at the left-hand side of the loom, the fork will not be tilted and the slidef will be moved outward in usual manner, acting through the arm (1 to rock the shaft 01 and effect a change of filling in well-known manner. This direct-acting mechanism is herein shown as located at the left side of the loom and is for convenience termed the main filling-detector. It will be remembered that such rocking of the shaft operates through the depending arms d and d to arrest the take-up and let-off mechanisms, respectively.

Referring to Fig. 2, a stand 9 is secured to the breast-beam on the replenishing side of the loom, and it has longitudinally movable therein a slide g provided with an auxiliary filling detector or fork g, and if the filling is absent this fork will not be-tilted, and its tail 9 will be engaged by the hook 'LUX of a weft hammer or actuator W so that the slide g will be moved outward. The outer end of the slide engages the upper end (1 of an arm (1 (see Fig. 6,) loosely mounted on the rock-shaft dbetween two collars 16 17, fast thereon, the collar 17 having a shoulder 18 in the path of a projection d on the hub of the arm d, the latter being held against the slide by a spring s By reference to Figs. 1 and 6 it will be seen that there is some lost motion between the projection d and the shoulder 18, sufficient lost motion being permitted to effect the rotative movement of the rock-shaft b by or through outward movement of the slide g the angularity of such movement being sufficient to arrest the take-up and let-oif mechanisms; but the rock-shaft will not be turned far enough to effect the operation of the replenishing mechanism. Outward movement,

therefore, of either slide f or g will arrest the operation of the take-up and let-off mechanisms, as will be manifest from the foregoing description and an inspection of the draw ings.

If the take-up and 1etofI" mechanisms operate during one or more picks on which the filling is not properly laid for any reason, it will be manifest that there will be a thin place in the cloth, whereas by arresting the operation of said mechanism for as many picks as the filling is improperly laid in the shed it will be equally manifest that when the filling is again properly laid the forward movement of the cloth due to the operation of the take-up mechanism will begin at the point where the proper insertion of the filling was stopped. Not infrequently the filling will fail as the shuttle is traveling to the shuttle-box farthest from the replenishing side of the loom, and the trailing end of the filling will be long enough to engage and tilt the fork f, so that filling replenishing will not be effected, while on the next pick the other fork g will detect the failure and arrest takeup and let-off. This detection is due to the fact that when the shuttle is in the right-hand box the thread-eye is nearest the outer end of such box, and the trailing filling will be drawn out of the path of the detector 9, so that the slide g will be moved outward, rocking shaft (1' and arresting the take-up and let-off. In the apparatus herein shown whenever the auxiliary detector detects filling failure the main detector-slide will be operated to effect filling replenishing whether or not the main fork f is tilted, so that the objection referred to is overcome. To this end a slide-bar e is mounted on the stand f at one side of the slide f being held in place partly by a bracket e and partly by a pivotal connection 6 between the outer end of the slide-bar and the upper end 61 of the arm 01 A dog e is fulcrumed at e on the slide f and extends rearwardly above the hook 10, said dog having secured to it a yielding tongue 6 bent laterally at e to normally rest on the top of the slide-bar e, the latter constituting a detent to normally maintain the dog inoperative. Upon rocking of the shaft d by outward movement of the slide g the movement of the arm (Z is sufficient to draw the detent e outward far enough to release the tongue e, and the dog drops so that its tip will engage the notch 8 of the hook w, thereby constituting a connection between the slide f and the weft-hammer W entirely independent of the detector f, and the slide f will be moved outward by the weft-hammer to there by cause the operation of the replenishing mechanism. The inner end of the detent e is beveled, seat 22, Fig. 3, to pass under the offset 6 and thereby lift the dog 6 into inoperative position when the detent resumes its normal position relative to the dog. Of course when the detectorf detects filling failure the hook and tail f will cooperate to efiect movement of the slidef but if the detector fails to detect then the proper movement of the slide is insured by the cooperation of the dog a and the hook w, filling replenishing being effected in either case. .The outer end of the tongue e is free and enters a hole a in the dog to permit compression of the tongue against the under part of the dog when the latteris in engagement with the hook to, because the outward movement of the slide f restores it to its normal position relative to the detent, the offset e sliding up the incline 22 onto the top of the detent, and theinstantthe hook relaxes'its pressure on the dog the latter is lifted by the tongue into inoperative position.

The loom can be stopped automatically by mechanism herein shown if the replenishing mechanism is operated apredetermined number of times in succession.

The slidef has a cross-barf Fig. 5,which supports a longitudinally-movable trip 71 havingits inner upturned end It in the path of the weft-hammer and having a depending lug 71 near its outer end to rest against an abutmentf fiformingapartof the standf An enlargement h on the trip normally supports a cam-lumplo on the underside ofa fingerlc,fulcru med at e on the slide and having its outer depending end 70 offset and hanging over the side of the stand. This end It is normally above a knock-E lever n, Fig. 2, fulcrumed at n on the breast-beam and adapted to release the shipper S from its holding-notch in the usual holding-plate N. At its outer end the trip is provided with a recess h in its upper face, normally covered by a shield f forming a part of the slide f and a detentpawl f fulcrumed at f on the stationary bracket e normally rests on the shield above the recess, as in Fig. 5. The first time the slide f is moved out the cam-lump 70 will be moved toward the outer end of the enlargement 71 the trip having been held from movement by the abutment f and when the slide moves in the trip moves with it, thefinger 70 still being held up above the knock-off lever. The recess 71. is then exposed, and if the slide is moved out on the next detecting pick the shield passes from under the pawl f and the point of the latter enters the recess h and stops the trip,while the slide continues to move. This causes the cam-lump la to drop off the enlargement 71 and the finger is descends, but in front of the knockolf lover. The slide returns, the trip moving with it, and the shield lifts the pawl out of the recess h while the finger 7c rides up over the knock-01f lever and drops behind it, so that if a third outward movement of the slide takes place the knock-0E lever is turned by the finger k, and the shipper is released to stop'the loom. Each time, however, that the slide moves outward the take-up and letoff mechanisms are arrested, so that the cloth remains stationary during such movements. If the shuttle threads properly after the first or second operation of the replenishing mechanism, the weft-hammer will act upon the upsubject-matter of and are claimed in another application, Serial No. 89,409, filed by Alfred turned inner endh of the trip to return it to the position shown in Fig. 5, thereby moving the finger 70" into inoperative position, and the same action of the weft-hammer restores the trip to normal relative position on the slide when the loomis started after it has been stopped, as described.

The particular construction and arrangement of the filling-detectors herein shown and the means for insuring the operation of thefilling-replenishing mechanism when the main detector fails to properly detect the absence of filling and the particular means for stopping the loom aftera predetermined number of successive movements of the slide f are not of my invention, and they form the E. Stafford, January 13, 1902.

In a loom provided with filling-replenishing meanssubstantiallysuch asherein illustrated the failure of the filling results in the automatic operation of the replenishing mechanism; but the number of picks which-elapse when the filling is not properly laid will vary; but by providing for the contemporaneous arrest of the take-up and let-off mechanisms for such picks the cloth remains stationary during the period that the normal running operation of the loom is interrupted. Thus there will be no thin places or thick places formed in the cloth, and this control of the take-up and let-off mechanisms I believe to be broadly new. My'invention is therefore not restricted to the single particular embodiment which I have herein described and illustrated, as the same may be modified or rearranged in different particulars by those skilled in the art without departing from the spirit and scope of my invention.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is- V 1. In a loom, take-up and let-off mechanisms, and means, operative upon failure of filling on any pick, to simultaneously arrest the operation of said mechanisms during the pick or picks on which the failure of filling exists.

2. In a loom, take-up and let-off mechanisms, and controlling means therefor, operative by or through detection of filling failure on any pick to arrest the operation of said mechanisms coterminously with filling failure.

3. In a loom, takeup and let-01f mechanisms, means to detect filling failure on each pick, and controlling means for the take-up and let-0E mechanisms, actuated by the detecting means, to efiect arrest of the take-up and let-elf mechanisms on the pick or picks on which the failure of filling is detected.

4. In a loom, take-up and let-ofi mechanisms, means to detect filling failure on each pick, and controlling means for each of ,said mechanisms, governed by or through detecting operation of the said detecting means, to

efiect arrest of take-up and let-oif for as many picks as the filling is absent.

5. In a loom, take-up and let-0E mechanisms, main and auxiliary filling-detectors operative to detect filling failure on any pick, and controlling means for said take-up and let-off mechanisms, governed by or through detecting operation of either detector, to of feet the arrest of take-up and let-0E simultaneously for a number of picks corresponding to the picks the filling is absent.

6. In a loom, take-up and let-olf mechanisms, two filling-detectors, connections between them and said mechanisms, to arrest the operation of the latter upon detection and during absence of filling, filling-replenishing mechanism, one of the detectors directly. controlling the operation thereof, and means whereby detection of filling failure by the other detector insures the operation of the directly-controlling detector.

7. In a loom, two filling-detectors, fillingreplenishing mechanism, the operation of which is directly controlled by one detector, and indirectly by the other through the firstnamed detector, upon detection of filling failure, take-up and let-01f mechanisms, and connections between said mechanisms and said detectors, whereby upon detection of filling failure, take-up and let-off is arrested coterminously with filling failure.

8. In a loom, two filling-detectors located at opposite sides of the loom, filling-replenishing mechanism directly controlled as to its operation by oneof said detectors, and indirectly by the other detector, but through the first-named detector, upon detection of filling failure, and take-up and let-ofi mechanisms the operation whereof is simultaneously arrested by or through detecting action of either filling-detector.

' 9. In aloom, two filling-detectors located at opposite sides of the loom, and adapted to de- ICC tect filling failure on alternate picks, take-up and let-0E mechanisms,and controlling means therefor actuated by or through detecting action of either filling-detector, to simultaneously arrest take-up and let-01f during the pick or picks on which the failure of filling is detected.

10. In a loom, two filling-detectors, a slide for each, and an actuator for each slide to move the latter operatively upon detection of filling failure, take-up and let-off mechanisms, the operation of both being arrested by or through operative movement of either slide, and connections, including a common member intermediate the slides and the takeup and let-0E mechanisms.

11. In a loom, two filling-detectors, a slide for each and an actuator for each slide, to. move the latter operatively upon detection of filling failure, filling-replenishing mechanism, the operation whereof is directly controlled by operative movement of one of the slides, means governed by the other detector upon detection thereby of filling failure, to

cause operative movement by its actuator, of the directly-controlled slide, to effect through such slide the actuation of the replenishing mechanism, take-up and let-off mechanisms, and means whereby the operation of' both mechanisms is arrested by or through operative movement of either slide.

12. In a loom, two filling-detecting devices to detect filling failure on alternate picks,

filling-replenishing mechanism, the operation of which is directly controlled by one of said devices upon detection of filling failure thereby, normally inoperative means forming a part of said device to effect filling replenishing upon detection of filling failure by the other detecting device, controlling connections between the latter and said means, to render said means operative upon such detection of filling failure, and take-up and letoff mechanisms, the operation of which is simultaneously arrested by or through filling failure detected by either of said detecting devices.

13. In a loom, stopping means, means, including a main filling-detector to operate the stopping means after a predetermined number of successive filling failures, an auxiliary fillingdetector, devices operative by or through detection thereof to cause actuation of the stopping means through the means including the main detector, and take-up and let-ofi mechanisms, the operation whereof is simultaneously arrested upon detection of filling failure by either detector during the pick or picks on which the filling failure exists.

14. In a loom, stopping means, filling-replenishing mechanism, means, including a main filling-detector, to effect the operation of said mechanism upon detection of filling failure by said detector, and operate the stopping means after a predetermined number of successive operations of said mechanism, an auxiliary filling-detector, devices operative by or through detection thereof to cause actuation of the replenishing mechanism, through the means including the main detector, and take-up and let-off mechanisms, the operation whereof is arrested upon every detection of filling failure by either detector.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

EDWARD S. STIMPSON.

Witnesses:

GEORGE OTIS DRAPER, ERNEST W. WOOD. 

